Which feature allows FortiAnalyzer to handle log messages more efficiently?

The feature that enables FortiAnalyzer to handle log messages more efficiently is LZ4 compression. This is a fast and efficient compression algorithm that reduces the size of log files, thus optimizing storage space and improving the speed at which logs can be accessed and processed. By compressing log data, FortiAnalyzer can store more logs in a given amount of storage, which enhances performance especially in environments with high log generation rates. The efficiency of LZ4 compression specifically lies in its balance between speed and compression ratio, making it suitable for real-time log analysis without imposing significant overhead.

The other features, while beneficial in their own right, do not specifically address the efficiency of log handling in the way that compression does. Optimized log message format may better organize the data structure, dedicated log databases could provide more efficient retrieval, and increased log storage capacity allows for more logs to be kept but does not necessarily improve efficiency in handling them. Thus, LZ4 compression stands out as the primary feature that directly enhances the efficiency with which FortiAnalyzer manages log messages.